Have found a spare key for my 03 td6 that Id thought lost.

Tried to put it into ignition,but wont go in.

Comparing my old one with the spare, me thinks a new ignition barrel the go,
my old key has gotten very rounded after the years of going in/out.

Whats the best way to get the barrel programmed into my old td6 if I buy a new
ignition barrel and where would be the better place to buy said ignition barrel.

Thanks in advance.

littlecub